Collect. Czech. Chem. Commun. 1984, 49, 71-77
https://doi.org/10.1135/cccc19840071

Photochemical reactions of 2-substituted furans with some carbonyl compounds

Stanislav Sekretár, Jana Rudá and Ladislav Štibrányi

Department of Organic Chemistry, Faculty of Chemical Technology, Slovak Institute of Technology, 812 37 Bratislava

Abstract

Photochemical reactions of 2-substituted furans I, IV and V with benzaldehyde, benzophenone and 4-methylbenzophenone gave substitued 2,7-dioxabicyclo[3,2,0]-3-heptenes, which can be used for syntheses of 2,3- or 2,4-disubstituted furans. Regioisomeric (2:1)-cycloadducts XV and XVI were distinguished on the basis of their 1H and 13C NMR spectra.